GB2057137B - Microwave method for measuring the relative moisture content of an object - Google Patents

Microwave method for measuring the relative moisture content of an object

Info

Publication number
GB2057137B
GB2057137B GB8022793A GB8022793A GB2057137B GB 2057137 B GB2057137 B GB 2057137B GB 8022793 A GB8022793 A GB 8022793A GB 8022793 A GB8022793 A GB 8022793A GB 2057137 B GB2057137 B GB 2057137B
Authority
GB
United Kingdom
Prior art keywords
measuring
moisture content
relative moisture
microwave method
microwave
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB8022793A
Other versions
GB2057137A (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB2057137A publication Critical patent/GB2057137A/en
Application granted granted Critical
Publication of GB2057137B publication Critical patent/GB2057137B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
    • G01N22/04—Investigating moisture content
GB8022793A 1979-07-14 1980-07-11 Microwave method for measuring the relative moisture content of an object Expired GB2057137B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792928487 DE2928487A1 (en) 1979-07-14 1979-07-14 METHOD FOR MEASURING THE RELATIVE HUMIDITY OF A MEASUREMENT WITH THE AID OF MICROWAVES IN THE GHZ RANGE

Publications (2)

Publication Number Publication Date
GB2057137A GB2057137A (en) 1981-03-25
GB2057137B true GB2057137B (en) 1983-10-19

Family

ID=6075717

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8022793A Expired GB2057137B (en) 1979-07-14 1980-07-11 Microwave method for measuring the relative moisture content of an object

Country Status (10)

Country Link
US (1) US4361801A (en)
JP (2) JPS5619443A (en)
CA (1) CA1149020A (en)
CH (1) CH650862A5 (en)
DE (1) DE2928487A1 (en)
FR (1) FR2461945A1 (en)
GB (1) GB2057137B (en)
NL (1) NL183961C (en)
PL (1) PL130757B1 (en)
SE (1) SE448322B (en)

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DE3209506A1 (en) * 1982-03-16 1983-09-22 Kraftwerk Union AG, 4330 Mülheim AXIAL STEAM TURBINE IN PARTICULAR, IN PARTICULAR VERSION
US4499418A (en) * 1982-08-05 1985-02-12 Texaco Inc. Water cut monitoring means and method
US4507602A (en) * 1982-08-13 1985-03-26 The United States Of America As Represented By The Secretary Of The Air Force Measurement of permittivity and permeability of microwave materials
GB2129944A (en) * 1982-11-08 1984-05-23 Nat Res Dev Microwave moisture sensor
JPS59102146A (en) * 1982-12-03 1984-06-13 Nippon Steel Corp Moisture measuring apparatus using microwave
US4816767A (en) * 1984-01-09 1989-03-28 Hewlett-Packard Company Vector network analyzer with integral processor
FI844061L (en) * 1984-10-16 1986-04-17 Kemira Oy FOERFARANDE OCH ANORDNING FOER MAETNING AV FUKTHALTEN ELLER TORRSUBSTANSHALTEN AV AEMNEN.
GB2194340A (en) * 1986-08-21 1988-03-02 Agricultural & Food Res Moisture content measurement
US4866371A (en) * 1986-09-15 1989-09-12 Chevron Research Company Sample accommodator and method for the measurement of dielectric properties
US4862060A (en) * 1986-11-18 1989-08-29 Atlantic Richfield Company Microwave apparatus for measuring fluid mixtures
US5263363A (en) * 1988-02-11 1993-11-23 Agar Corporation, Ltd. Apparatus and method for determining the percentage of a fluid in a mixture of fluids
US4991915A (en) * 1988-08-04 1991-02-12 Imperial Chemical Industries PLC Manchester Polytechnic Microwave moisture sensing arrangement
US5315258A (en) * 1989-01-13 1994-05-24 Kajaani Elektroniikka Oy Method and apparatus for determining the moisture content of a material
ATE192576T1 (en) * 1989-08-15 2000-05-15 Commw Scient Ind Res Org DETERMINATION OF MOISTURE CONTENT BY MICROWAVE PHASE SHIFT AND SURFACE DENSITY
GB9121678D0 (en) * 1991-10-12 1991-11-27 Unaform Ltd Microwave drainage meter
US5256978A (en) * 1992-04-27 1993-10-26 Mitchell Rose Microwave moisture content analyzer
JP3240023B2 (en) * 1993-10-08 2001-12-17 新東工業株式会社 Manufacturing method of durable air-permeable type
US6025724A (en) * 1997-11-20 2000-02-15 Malcam Ltd. Device and method for determining the moisture content of packaged material
US5845529A (en) * 1995-07-18 1998-12-08 Malcam Ltd. Device and method for determining the moisture content of material
US6107809A (en) * 1995-07-18 2000-08-22 Malcam Ltd. Device and method for determining the moisture content of tobacco
US6204670B1 (en) * 1997-06-09 2001-03-20 National Research Development Corp. Process and instrument for moisture measurement
US6111415A (en) * 1998-01-09 2000-08-29 Malcam Ltd. Device and method for determining the moisture content of a bulk material
DE19934881A1 (en) * 1999-07-24 2001-01-25 Deere & Co Device for measuring the moisture of crops
US6691563B1 (en) 2000-04-11 2004-02-17 The United States Of America As Represented By The Department Of Agriculture Universal dielectric calibration method and apparatus for moisture content determination in particulate and granular materials
DE20206903U1 (en) * 2002-04-30 2003-09-04 Imko Intelligente Micromodule Device for determining the moisture of a substrate
US20040194541A1 (en) * 2002-06-10 2004-10-07 The Procter & Gamble Company High-Q LC circuit moisture sensor
CN100510724C (en) * 2003-07-31 2009-07-08 王子制纸株式会社 Method and device for measuring moisture content
US7078913B1 (en) 2003-12-31 2006-07-18 The United States Of America As Represented By The Secretary Of Agriculture Multipath resistant microwave moisture sensor
US7330034B1 (en) 2003-12-31 2008-02-12 The United States Of America As Represented By The Secretary Of Agriculture Moisture measurement system for seed cotton or lint
US7836910B2 (en) 2004-12-29 2010-11-23 Rain Bird Corporation Soil moisture sensor and controller
US7278186B2 (en) * 2005-01-05 2007-10-09 Uster Technologies Ag Ultra low frequency moisture sensor
NL1031209C2 (en) * 2006-02-22 2007-08-24 Enraf Bv Method and device for accurately determining the level L of a liquid with the aid of radar signals radiated to the liquid level and radar signals reflected by the liquid level.
WO2008005346A2 (en) * 2006-06-30 2008-01-10 The Procter & Gamble Company Device for measuring moisture in overlays (like hair) of a microstrip directional coupler
NL1034327C2 (en) * 2007-09-04 2009-03-05 Enraf Bv Method and device for determining the level L of a liquid within a certain measuring range with the aid of radar signals radiated to the liquid level and radar signals reflected by the liquid level.
US8659472B2 (en) * 2008-09-18 2014-02-25 Enraf B.V. Method and apparatus for highly accurate higher frequency signal generation and related level gauge
US8271212B2 (en) * 2008-09-18 2012-09-18 Enraf B.V. Method for robust gauging accuracy for level gauges under mismatch and large opening effects in stillpipes and related apparatus
US8224594B2 (en) * 2008-09-18 2012-07-17 Enraf B.V. Apparatus and method for dynamic peak detection, identification, and tracking in level gauging applications
EP2251679B9 (en) 2009-05-11 2013-01-09 AMS- Advanced Microwave Systems GmbH Device and method for measuring a product characteristic with a microwave dispersion range sensor assembly
DE102009024203B4 (en) 2009-06-08 2013-01-24 Materialforschungs- und -prüfanstalt an der Bauhaus-Universität Weimar Microwave sensor and method for determining dielectric material properties
DE102010041572B3 (en) * 2010-09-28 2012-03-01 Hauni Maschinenbau Ag Apparatus and method for processing and measuring properties of a moving strand of material
US9128494B2 (en) 2011-11-17 2015-09-08 Microsemi Corporation Apparatus and method for assessing volumetric moisture content and controlling an irrigator
US9046406B2 (en) 2012-04-11 2015-06-02 Honeywell International Inc. Advanced antenna protection for radars in level gauging and other applications
WO2020230478A1 (en) * 2019-05-13 2020-11-19 ソニー株式会社 Measurement device, measurement system, and measurement method
CN110308160A (en) * 2019-07-12 2019-10-08 湛江经济技术开发区裕鑫实业有限公司 A kind of method and device thereof of the water content using microwave measurement organic solvent

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB883828A (en) * 1957-03-06 1961-12-06 Beloit Iron Works Improvements in or relating to methods and apparatus for sensing a constituent of a material
US3693079A (en) * 1970-04-14 1972-09-19 Charles W E Walker Apparatus for measuring percent moisture content of particulate material using microwaves and penetrating radiation
DE2309278C2 (en) * 1973-02-24 1975-03-13 Frieseke & Hoepfner Gmbh, 8520 Erlangen Device for measuring the concentration of certain properties, for example moisture, of moving material webs by means of microwave energy
US4123702A (en) * 1976-02-13 1978-10-31 Ilmari Kinanen Method for classifying and measuring of timbers
JPS5850515B2 (en) * 1979-01-17 1983-11-10 ツイン電機株式会社 Two-axis rotating vibrator

Also Published As

Publication number Publication date
NL183961C (en) 1989-03-01
SE8005112L (en) 1981-01-15
FR2461945B1 (en) 1981-12-11
GB2057137A (en) 1981-03-25
DE2928487C2 (en) 1988-09-08
JPS6453140A (en) 1989-03-01
PL225602A1 (en) 1982-01-18
JPH0121457B2 (en) 1989-04-21
JPS5619443A (en) 1981-02-24
FR2461945A1 (en) 1981-02-06
SE448322B (en) 1987-02-09
NL8003945A (en) 1981-01-16
US4361801A (en) 1982-11-30
CH650862A5 (en) 1985-08-15
JPH0255745B2 (en) 1990-11-28
PL130757B1 (en) 1984-09-29
DE2928487A1 (en) 1981-02-05
CA1149020A (en) 1983-06-28
NL183961B (en) 1988-10-03

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19960711